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Re: SET LOCK MODE WAIT n in OAT tasks.... [476....

Posted By: Art Kagel
Date: Tuesday, 7 September 2010, at 5:30 p.m.

Also, all of those alerts and sensor data are being stored in your
production database which is using up server resources and IO bandwidth.
THIS IS WRONGHEADED DESIGN! The repository for the sensor data and alert
notification history, as well as the SQL statement history, should be in an
external data store NOT in the same IDS instance that you are monitoring and
managing! AT LEAST make the ph_alert and the other historical tables
actually external table files and let us configure where they are stored!

Personally, I turn it all off at all of my client sites and monitor external
to the engine using our own scripts or AGS's Server Studio and Sentinel.


Art S. Kagel
Advanced DataTools (
IIUG Board of Directors (

Disclaimer: Please keep in mind that my own opinions are my own opinions and
do not reflect on my employer, Advanced DataTools, the IIUG, nor any other
organization with which I am associated either explicitly, implicitly, or by
inference. Neither do those opinions reflect those of other individuals
affiliated with any entity with which I am affiliated nor those of the
entities themselves.

On Tue, Sep 7, 2010 at 4:39 PM, Fernando Nunes <>wrote:

> On Tue, Sep 7, 2010 at 7:32 PM, John Miller iii <>
> wrote:
> > FYI, OAT will always set the following defaults for a
> > dbworker thread, or when opening a new database:
> >
> > isolation level to dirty read
> >
> > lock mode to wait 5
> >
> Great... Now I feel officially stupid... My question appeared because I
> wanted to put literally "SET LOCK MODE TO WAIT 5" in one task :)
> >
> But this is nice to know and should be in the docs (I'm not saying it's not
> because to be honest I didn't check... :/ ).
> Finally, the reason why I wanted this is because I was creating a task to
> delete useless (from my point of view) alarms in ph_alert. Specifically all
> the "Logical Log NNNN comleted" and "Logical Log NNN ... backed up".
> I was checking an I noticed the task that creates them is an internal C
> function. And it does other useful stuff like putting "Long Tx" alerts....
> And the object name(?) is the alarmprogram class code.... So... Why not
> taking this one step further:
> - Allow the user to configure what events are "grabbed" and insert as
> alerts
> and which ones are not.
> - Include even events that do not call ALARMPROGRAM
> A few year ago I created a shell script that tails the online.log and given
> a configuration file (with strings to match, class and other stuff) would
> call the alarmprogram with that events. I could do the same with a task and
> sysmaster:sysonlinelog, but what's the point if there's something doing the
> same (only not in the right manner I think...).
> Regards.
> --
> Fernando Nunes
> Portugal
> My email works... but I don't check it frequently...
> --0015175cdee23e2e67048fb16358
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.


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